Ans. :- 1. Alphanumeric keys :- A to Z, 0 to 9
2. Navigation keys :- Up Arrow, Down Arrow, Left Arrow, Right Arrow
3. Function keys :- F1 to F12
4. Special keys :- Ctrl, Alt and Shift
5. Punctuation keys :- All symbols of like comma (,), semi colon (;), question mark (?), and slash (/) etc.